Purification of barium values

Details Purification of barium values Purification of barium values

1987-03-02

1989-05-30

Stoll, Robert L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

423395, 423430, 423497, 423635, 423165, 75101BE, 75108, 75121, 210673, 210685, 210688, B01D 1104, C01F 1100

Patent

active

048349526

ABSTRACT:
Purified barium salts essentially devoid of strontium impurities, e.g., highly pure barium carbonate, are produced by liquid/liquid extracting an aqueous solution of impure barium values with an organic solvent medium which comprises at least one water-insoluble carboxylic acid, phosphonic acid monoester, or substituted 8-hydroxyquinoline extractant. The mixture of extraction is separated into a purified aqueous phase containing the desired barium salt values and an organic phase containing the impurity values sought to be removed.

REFERENCES:
patent: 3122414 (1964-02-01), Horner et al.
patent: 3574531 (1971-04-01), Schultz
patent: 3637711 (1972-01-01), Budde et al.
patent: 3694369 (1972-09-01), Orlandini
Chemical Abstracts, vol. 76, 1972, p. 329, No. 1451b, "Extraction of alkaline-earth elements and magnesium by aliphatic . . . ".
Chemical Abstracts, vol. 82, 1975, p. 338, No. 16790e, "Extraction of strontium by monocarboxylic acids . . . ".
Chemical Abstracts, vol. 86, 1977, p. 449, No. 128205p, "Extraction of alkaline earth elements using carboxylic . . . ".
Chemical Abstracts, vol. 83, 1975, p. 204, No. 31323a, "Extraction of alkaline earth elements and magnesium . . . ".
Chemical Abstracts, vol. 86, 1977, p. 387, No. 22447d, "Extraction of alkaline earth metals by hexyl ester . . . ".
Chemical Abstracts, col. 83, 1975, p. 489, No. 121568p, "Extractionsome processes of separation of alkaline . . . ".
Chemical Abstracts, vol. 101, p. 571, No. 239447s, "The Extraction behavior of ligands of the CMAB-quinolin-8-ol . . . ".
Prokhorova et al, "Extraction of the Alkaline Earth Elements by Carboxylic Acids, " Translated from Radiokhimiya, vol. 19, No. 1, pp. 46-51, Jan.-Feb., 1977.

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